1. Computed angiographic variations in hepatic venous vasculature in dogs.
- Author
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Takagi S, Nishino A, Hanazono K, and Hosoya K
- Subjects
- Animals, Dogs, Hepatectomy veterinary, Retrospective Studies, Vena Cava, Inferior diagnostic imaging, Hepatic Veins diagnostic imaging, Hepatic Veins surgery, Liver surgery
- Abstract
Objective: To identify the number of hepatic veins draining directly or indirectly into the caudal vena cava Thank you (CVC) using computed tomography angiography (CTA) in dogs., Study Design: Retrospective clinical study., Animals: Client-owned dogs (n = 77)., Methods: Abdominal CTA images were analyzed. Retrospective convenience sampling was performed using archived clinical cases to determine the number of hepatic veins in each liver lobe., Results: A median of 2 vessels from the right lateral lobe (range: 1-4) and the caudate process of the caudate lobe (range: 1-5) drained directly into the CVC. In the quadrate lobe, most common patterns consisted of 1 vessel directly draining to the CVC or indirectly via the left hepatic vein (LHV), and a vessel from quadrate lobe and right medial lobe merging into 1 vessel draining into the CVC or the LHV. A median of 3 vessels in the left lateral lobe (range: 2-8) and a median of 1 vessel in the left medial lobe (range: 1-3) drained into the LHV. In the papillary process of the caudate lobe, a median of 1 (range: 1-2) vessel drained directly into the CVC or the LHV., Conclusion: The draining pattern of hepatic veins varied widely in all liver lobes, especially the left lateral liver lobe., Clinical Significance: Veterinary surgeons should consider the potential presence of multiple hepatic veins and their draining pattern when performing hilar liver lobe resection. Attentive evaluation of a preoperative CTA is recommended for surgical planning., (© 2022 American College of Veterinary Surgeons.)
- Published
- 2022
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